Onedrive and Photos

I wonder if you could help me, please?

I am uploading files to my Onedrive. I noticed that pictures with .jpg .PNG .jpeg and possibly other extensions are being included in the Photos tab, even if they aren’t in the Pictures folder.

Is there a way to stop this?  I want to keep the pictures (some are screenshots from my mobile, some are ones with an ex in them) but I don’t want them mixed up with all my other photos.  If I delete them while in the Photos tab it deletes them off Onedrive. 

I only want pictures stored in the Pictures folder to show in my Photos tab. 

Many thanks.